RFID has three main components: tags, readers and host computer. The tag is a basic component which can be implemented or attached to the animal, object and product. So through the tag the objects can be identified easily. The RFID reader reads the tag, it uses radio frequency to recognize the presence of tags. The readers can write into the tags if it is writeable. The next step is that readers pass on the observation to the host computer. Observation means detection of tags by readers. The host computer is a hardware which create reports according to the received data.
The tags are similar to bar code, they have a special layers, so they can be easily fixed to the objects. The packaging of the tags depends on the environment, outdoors or chemical factories require special adequate layers in order to prevent the tags from the damage.
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